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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
T: DTC B0302 CAN-LS BUS OFF
DTC DETECTING CONDITION:
Because of a lot of error data occurred, some units have been disconnected not to affect other units.
Communication failure from the unit in which error is occurred is input at the same time.
TROUBLE SYMPTOM:
"Er LC" is displayed in odo/trip meter.
WIRING DIAGRAM:
CAN JOINT
CONNECTOR
A:
i84
A27
A26
BODY
INTEGRATED
UNIT
B26
AE
AE
B25
B: B280
Step
1
CHECK DTC.
Read the DTC of body integrated unit using
Subaru Select Monitor.
2
CHECK DTC.
Check the DTC displayed in the body inte-
grated unit.
3
CHECK DTC.
Turn the ignition switch to OFF and read the
DTC again.
COMBINATION METER
i10
i77
ON :
WN :
*
*
Is there any DTC other than
B0302?
Is the DTC displayed currently
malfunctioning?
Is B0302 currently malfunction-
ing?
LAN(diag)-74
4
CENTER
DISPLAY
2
i92
WN
14
CENTER
DISPLAY
WN
6
i90
1
AUTO A/C
CONTROL
MODULE
11
B283
WITHOUT NAVIGATION
WITH NAVIGATION
1
:
TERMINAL No. OPTIONAL
ARRANGEMENT
AMONG 1, 2, 3, 4, 5 AND 6
TERMINAL No. OPTIONAL
2
:
ARRANGEMENT
AMONG 7, 8, 9, 10, 11 AND 12
AE
:
WITH AUTO A/C
Check
A:
i84
1 2
3 4
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
24 25
26 27 28 29
30 31 32 33
B: B280
1
2
3
4
8
9
10
11 12 13 14 15
16 17 18
1 2
22
23
24 25
26 27
i10
1
2 3 4 5
6 7 8 9
11
12 13 14 15 16 17 18 19 20 21 22
B283
1
2
3
4
5 6 7
8
11
12
13
14 15 16 17
18
i90
1
2
3
4
5 6 7
8
10
11
12 13 14 15
i77
1 2 3 4 5 6 7 8 9 10 11 12
i92
1 2
3 4
Yes
Perform the diag-
Go to step 2.
nosis according to
other DTC.
Check the connec-
Go to step 3.
tion of harness
connector. Go to
step 3.
Go to step 4.
Temporary poor
contact occurs.
5 6
7 8
34 35
5
6 7
19 20
28 29
0 3
10
9
10
19 20
8
16
LAN00254
No
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